This document provides specifications for four complementary silicon plastic power transistors - the MJE15028, MJE15030 (NPN), MJE15029, MJE15031 (PNP). The transistors are designed for use as high-frequency drivers in audio amplifiers. Key specifications include a high current gain-bandwidth product, TO-220 package, and compliance with RoHS and Pb-free requirements. Electrical characteristics, thermal properties, and safe operating areas are provided along with ordering information.